NASDAQ:CCOI | Historical Stock Price | COGENT COMMUNICATIONS HOLDINGS, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2002-02-05 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.62$7.63$16.06$33.84$71.30$150.222002-02-052026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2002

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2002-12-31$7.60$7.60225
2002-12-30$7.00$7.001,235
2002-12-27$10.00$10.00610
2002-12-26$9.00$9.00535
2002-12-24$10.00$10.001,285
2002-12-23$10.20$10.20485
2002-12-20$12.00$12.00440
2002-12-19$14.00$14.00150
2002-12-18$14.40$14.40310
2002-12-17$15.20$15.20275
2002-12-16$17.80$17.80160
2002-12-13$18.20$18.20180
2002-12-12$18.20$18.20530
2002-12-11$20.00$20.00735
2002-12-10$20.00$20.00305
2002-12-09$22.00$22.00385
2002-12-06$20.00$20.00295
2002-12-05$21.80$21.80665
2002-12-04$25.80$25.80165
2002-12-03$26.00$26.00690
2002-12-02$24.00$24.001,705
2002-11-29$27.80$27.802,610
2002-11-27$20.00$20.001,310
2002-11-26$18.00$18.00830
2002-11-25$10.00$10.001,240
2002-11-22$8.00$8.00260
2002-11-21$6.40$6.40160
2002-11-20$5.40$5.403,245
2002-11-19$6.80$6.80355
2002-11-18$6.40$6.40125
2002-11-15$6.80$6.80795
2002-11-14$7.00$7.001,075
2002-11-13$7.40$7.40205
2002-11-12$7.80$7.80180
2002-11-11$7.40$7.40425
2002-11-08$8.80$8.80435
2002-11-07$7.00$7.001,230
2002-11-06$7.40$7.40400
2002-11-05$8.40$8.4075
2002-11-04$8.40$8.40420
2002-11-01$7.80$7.80425
2002-10-31$7.60$7.6045
2002-10-30$7.60$7.601,055
2002-10-29$6.60$6.60300
2002-10-28$5.60$5.60105
2002-10-25$6.40$6.40775
2002-10-24$6.00$6.001,055
2002-10-23$5.40$5.400
2002-10-22$5.40$5.40905
2002-10-21$6.00$6.00410
2002-10-18$6.00$6.001,640
2002-10-17$6.00$6.003,235
2002-10-16$7.80$7.80910
2002-10-15$11.00$11.00315
2002-10-14$12.40$12.4020
2002-10-11$13.00$13.00110
2002-10-10$13.00$13.000
2002-10-09$13.00$13.0010
2002-10-08$13.00$13.0020
2002-10-07$15.00$15.00390
2002-10-04$18.00$18.0045
2002-10-03$19.00$19.00115
2002-10-02$17.00$17.0020
2002-10-01$18.00$18.00135
2002-09-30$19.00$19.00455
2002-09-27$19.00$19.000
2002-09-26$19.00$19.0030
2002-09-25$17.20$17.20110
2002-09-24$19.00$19.0080
2002-09-23$20.00$20.005
2002-09-20$20.00$20.0025
2002-09-19$20.00$20.00175
2002-09-18$21.00$21.0070
2002-09-17$22.00$22.00295
2002-09-16$24.00$24.00135
2002-09-13$24.00$24.00145
2002-09-12$24.00$24.00145
2002-09-11$22.00$22.0010
2002-09-10$22.00$22.0030
2002-09-09$21.00$21.00105
2002-09-06$21.00$21.001,045
2002-09-05$24.00$24.000
2002-09-04$24.00$24.00100
2002-09-03$24.00$24.0085
2002-08-30$25.00$25.0055
2002-08-29$25.00$25.00115
2002-08-28$25.00$25.0025
2002-08-27$25.00$25.00335
2002-08-26$24.40$24.400
2002-08-23$24.40$24.4020
2002-08-22$25.00$25.00260
2002-08-21$24.80$24.8095
2002-08-20$24.00$24.00185
2002-08-19$24.00$24.0070
2002-08-16$24.00$24.000
2002-08-15$24.00$24.00355
2002-08-14$23.60$23.6015
2002-08-13$23.60$23.600
2002-08-12$23.60$23.6010
2002-08-09$24.80$24.80305
2002-08-08$25.00$25.00385
2002-08-07$23.00$23.0065
2002-08-06$23.00$23.00280
2002-08-05$24.00$24.0070
2002-08-02$24.20$24.2020
2002-08-01$25.00$25.0015
2002-07-31$23.00$23.00405
2002-07-30$25.80$25.8080
2002-07-29$25.00$25.0060
2002-07-26$23.60$23.6025
2002-07-25$24.00$24.0065
2002-07-24$25.00$25.000
2002-07-23$25.00$25.0070
2002-07-22$25.40$25.4025
2002-07-19$24.20$24.200
2002-07-18$24.20$24.2035
2002-07-17$24.20$24.205
2002-07-16$25.00$25.000
2002-07-15$25.00$25.005
2002-07-12$25.00$25.0030
2002-07-11$25.00$25.00125
2002-07-10$25.00$25.00840
2002-07-09$26.00$26.0075
2002-07-08$27.00$27.0095
2002-07-05$28.00$28.000
2002-07-03$28.00$28.0015
2002-07-02$27.00$27.00625
2002-07-01$28.60$28.6045
2002-06-28$26.20$26.20165
2002-06-27$26.20$26.2010
2002-06-26$26.00$26.00410
2002-06-25$31.00$31.00225
2002-06-24$31.00$31.00865
2002-06-21$32.00$32.00200
2002-06-20$32.00$32.00675
2002-06-19$32.00$32.00105
2002-06-18$32.00$32.0090
2002-06-17$33.40$33.40330
2002-06-14$34.80$34.8075
2002-06-13$33.60$33.60340
2002-06-12$37.00$37.00370
2002-06-11$40.80$40.8050
2002-06-10$42.00$42.00110
2002-06-07$44.40$44.400
2002-06-06$44.40$44.40105
2002-06-05$46.00$46.0015
2002-06-04$47.00$47.00360
2002-06-03$51.00$51.00110
2002-05-31$52.00$52.0055
2002-05-30$53.00$53.0050
2002-05-29$53.00$53.0015
2002-05-28$53.00$53.0045
2002-05-24$54.20$54.2050
2002-05-23$54.20$54.2035
2002-05-22$54.20$54.2040
2002-05-21$55.00$55.0035
2002-05-20$57.00$57.0070
2002-05-17$54.00$54.0080
2002-05-16$53.00$53.00150
2002-05-15$51.20$51.2015
2002-05-14$53.00$53.0070
2002-05-13$52.00$52.00390
2002-05-10$51.00$51.00370
2002-05-09$55.00$55.00125
2002-05-08$56.00$56.0040
2002-05-07$55.00$55.00250
2002-05-06$51.00$51.005
2002-05-03$52.00$52.00110
2002-05-02$52.20$52.20185
2002-05-01$56.80$56.80515
2002-04-30$60.00$60.0050
2002-04-29$60.00$60.00305
2002-04-26$57.00$57.00640
2002-04-25$52.00$52.00875
2002-04-24$55.00$55.00350
2002-04-23$56.00$56.0015
2002-04-22$55.20$55.2080
2002-04-19$56.20$56.20145
2002-04-18$58.00$58.005
2002-04-17$58.00$58.00200
2002-04-16$57.00$57.00400
2002-04-15$54.00$54.00140
2002-04-12$52.00$52.00660
2002-04-11$48.80$48.80265
2002-04-10$49.80$49.80190
2002-04-09$48.00$48.00385
2002-04-08$52.80$52.80765
2002-04-05$52.20$52.20150
2002-04-04$55.00$55.001,135
2002-04-03$56.20$56.201,375
2002-04-02$64.00$64.001,610
2002-04-01$63.00$63.00385
2002-03-28$62.60$62.60100
2002-03-27$60.20$60.20320
2002-03-26$68.00$68.0060
2002-03-25$68.20$68.20155
2002-03-22$73.60$73.6020
2002-03-21$75.00$75.00120
2002-03-20$75.00$75.00710
2002-03-19$75.00$75.00105
2002-03-18$74.00$74.00375
2002-03-15$74.00$74.0085
2002-03-14$70.80$70.80100
2002-03-13$69.20$69.2090
2002-03-12$68.00$68.00125
2002-03-11$67.40$67.4070
2002-03-08$67.00$67.00150
2002-03-07$66.00$66.00155
2002-03-06$66.60$66.60325
2002-03-05$68.00$68.00435
2002-03-04$66.00$66.00270
2002-03-01$66.60$66.60730
2002-02-28$57.80$57.80120
2002-02-27$54.00$54.00300
2002-02-26$55.20$55.20155
2002-02-25$54.20$54.20125
2002-02-22$58.00$58.00400
2002-02-21$63.00$63.00220
2002-02-20$65.00$65.00305
2002-02-19$67.00$67.00225
2002-02-15$68.60$68.60205
2002-02-14$65.00$65.00850
2002-02-13$65.40$65.4040
2002-02-12$63.20$63.20150
2002-02-11$65.40$65.40650
2002-02-08$63.00$63.00385
2002-02-07$62.00$62.00550
2002-02-06$63.40$63.406,045
2002-02-05$101.00$101.00440